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Optimal Power Flow Based Architecture Design for Electrical Power System in More-Electric Aircraft

Wang, Xin; Atkin, Jason; Bozhko, Serhiy; Hill, Christopher Ian

Authors

Xin Wang xin.wang2@nottingham.ac.uk

Jason Atkin

Serhiy Bozhko

Christopher Ian Hill



Abstract

When designing an electric power system (EPS) architecture for a more electric aircraft (MEA), the total weight of the system is treated as one of the most important criteria. For the weight saving purpose, this paper proposes an optimal power flow (OPF) based architecture design method to minimise the redundancy of the EPS of MEA, which includes reducing the generator overloading requirements for lighter generator design, and cutting down the excessive harness and number of contactors to lighten the wiring system. Based on the formulized mixed-integer linear programming (MILP) model, the addressed optimal architecture design (OAD) problem can be solved by optimising the power routing with minimum transmission losses in different flight stages simultaneously to minimise generator sizing and number of connections. The model contains both decision variables indicating the system architecture (e.g. cables existences and generator capacity) and the ones indicating the power flows with regards to the flight stages. In addition, the total transmission losses in the system are considered by formulizing the non-linear transmission losses of the DC/DC converters and cables losses in model constraints. By minimising the transmission losses, the generator overload capacity, as well as the cable needed for the connections, an optimised architecture with less redundancy and having optimal power routing in different flight stages can be realized, leading to lighter generator and wiring system for EPS.

Start Date Oct 14, 2019
Publication Date Oct 17, 2019
Book Title Proceedings of the IEEE 45th Annual Conference of the Industrial Electronics Society (IECON'2019)
APA6 Citation Wang, X., Atkin, J., Bozhko, S., & Hill, C. I. (2019). Optimal Power Flow Based Architecture Design for Electrical Power System in More-Electric Aircraft. In Proceedings of the IEEE 45th Annual Conference of the Industrial Electronics Society (IECON'2019)
Keywords optimal architecture design; optimal power flow; transmission losses; wiring redundancy; electric power system; more electric aircraft
Related Public URLs https://iecon2019.org/
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